Lane splitting is not legal in Wisconsin. No state law lets a motorcycle ride between lanes of traffic, and Wisconsin’s general lane-use statute requires every vehicle, motorcycles included, to stay within a single lane. The rule applies the same way whether traffic is moving at highway speed or sitting still at a red light.
The Statute Behind the Ban
Wisconsin Statute 346.13 governs laned roadways. It requires every driver to “drive as nearly as practicable entirely within a single lane” and to confirm a lane change can be made safely before moving over.1Wisconsin State Legislature. Wisconsin Code 346.13 – Driving on Roadways Laned for Traffic There is no motorcycle exception, no permit, and no low-speed carve-out. The only vehicles that get any flexibility are wide farm equipment that physically cannot fit in a lane and oversized combinations navigating roundabouts.
Filtering at Stopped Traffic Is Also Illegal
Some states separate lane splitting (threading moving traffic) from lane filtering (easing between stopped cars at a light). Wisconsin does not. The single-lane requirement applies no matter how slow the surrounding traffic is going, so creeping to the front at a red light counts as the same violation as weaving through a moving highway.1Wisconsin State Legislature. Wisconsin Code 346.13 – Driving on Roadways Laned for Traffic
Fines and License Points
A lane-splitting citation falls under Wisconsin Statute 346.17. A first offense carries a forfeiture of $20 to $40. A second or subsequent conviction within a year runs $50 to $100.2Wisconsin State Legislature. Wisconsin Code 346.17 – Penalties for Violating Sections 346.04 to 346.16 Court costs and surcharges push the actual total well above those base figures. The conviction also adds demerit points to your driving record, and 12 or more points in any 12-month period triggers a license suspension.3Wisconsin Department of Transportation. Wisconsin Point System
When It Becomes Reckless Driving
If an officer views the riding as dangerous rather than merely improper, the charge can jump to reckless driving under Statute 346.62, which prohibits endangering a person or property through negligent vehicle operation. Causing great bodily harm through negligent operation is a Class H felony, with a potential fine of up to $10,000 and up to six years in prison.4Wisconsin State Legislature. Wisconsin Code 346.62 – Reckless Driving
What a Citation Does to a Crash Claim
The traffic fine is often the smallest cost. The real financial exposure shows up if lane splitting leads to a collision, because Wisconsin’s comparative negligence rule can wipe out your recovery.
Under Statute 895.045, your compensation is reduced by your share of fault, and if you are found more at fault than the other party, you recover nothing.5Wisconsin State Legislature. Wisconsin Code 895.045 – Contributory Negligence Even when a driver caused the crash by changing lanes without looking, the fact that you were riding between lanes gives the insurer a strong argument that you were at least equally responsible. A lane-splitting notation on the police report pushes that argument close to conclusive. Adjusters use it to deny claims outright or to drop settlement offers far below what the injuries would otherwise support.
So the real risk is not the $40 ticket. It is the possibility of losing tens or hundreds of thousands of dollars in compensation after a serious crash.
What You Can Legally Do in Your Lane
Wisconsin does protect motorcyclists’ right to the full use of whatever lane they occupy. Under Statute 346.595, no vehicle may be driven in a way that deprives a motorcycle of the full use of its lane, so a car cannot crowd in or try to squeeze past within the same lane.6Wisconsin State Legislature. Wisconsin Code 346.595 – Motorcycles and Mopeds Two motorcycles may also ride side by side in a single lane if both riders consent, but no more than two abreast.